Safety device



FIG. 1 is a first perspective view of the design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a first elevational view thereof;

FIG. 4 is a second elevational view thereof;

FIG. 5 is a third elevational view thereof;

FIG. 6 is a fourth elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof. 

CLAIM The ornamental design for a safety device, as shown and described. 